Final answer:
To classify arthropods, insects (Hexapoda) are mainly terrestrial with six legs, arachnids (Chelicerata) have eight legs and often fangs, myriapods include centipedes and millipedes with numerous legs, and crustaceans are primarily aquatic with varied appendages.
Step-by-step explanation:
To classify each statement with the correct arthropod group, we need to match the descriptions to the appropriate groups. Here is how you would classify them:
- Insects (Hexapoda): These arthropods have three main body segments (head, thorax, abdomen), six legs, and usually two pairs of wings. They are primarily terrestrial and many are aerial.
- Arachnids (Chelicerata): This group includes spiders, mites, and scorpions, with the first pair of appendages modified as fangs or pincers. Arachnids typically have eight legs.
- Myriapods: This includes centipedes and millipedes. They live on land and have a range from ten to nearly 200 pairs of appendages.
- Crustaceans: This group is comprised of crabs, lobsters, crayfish, isopods, barnacles, and some zooplankton, mostly living in aquatic environments. They can also include some terrestrial species like the pillbug.
Arthropod Diversity includes the aforementioned groups, which exhibit a variety of forms and have been highly successful, colonizing terrestrial, aquatic, and aerial habitats.